<!DOCTYPE html>
<html>
	<head>
		<meta charset="UTF-8">
		<title></title>
		<style type="text/css">
			a:link{
				/*因为a是行内元素不能设置宽高，所以需要转成块元素*/
				display: block;
				width: 93px;
				height: 29px;
				background-image: url("img/link.png");
				
			}
			a:hover{
				background-image: url("img/hover.png");
			}
			a:active{
				background-image: url("img/active.png");
			}
		</style>
	</head>
	<body>
		<a href=""></a>
	</body>
</html>
